Rattus stoicus 


Taxonomy [top]

Kingdom Phylum Class Order Family
Animalia Chordata Mammalia Rodentia Muridae

Scientific Name: Rattus stoicus
Species Authority: (Miller, 1902)
Common Name(s):
English Andaman Rat
Mus rogersi Thomas, 1907
Mus stoicus Miller, 1902
Mus taciturnus Miller, 1902
Rattus rogersi (Thomas, 1907)
Taxonomic Notes: Ellerman (1961) opined that it “possibly represents Rattus palmarum; possibly a member of sabanus group, or perhaps a representative of mulleri group”. Musser and Heaney (1985) redescribed this species. Corbet and Hill (1992), and Agrawal (2000) consider it as a distinct species.

Assessment Information [top]

Red List Category & Criteria: Vulnerable D2 ver 3.1
Year Published: 2008
Date Assessed: 2008-06-30
Assessor(s): Molur, S. & Nameer, P.O.
Reviewer(s): Amori, G. (Small Nonvolant Mammal Red List Authority) & Cox, N. (Global Mammal Assessment Team)
Although there are no threats currently identified, it is plausible that the species could be under some pressure in the near future from the relief schemes proposed for post tsunami development. The species is restricted to severely fragmented locations, hence assessed as Vulnerable.
Previously published Red List assessments:
2000 Vulnerable (VU)
1996 Lower Risk/least concern (LR/lc)

Geographic Range [top]

Range Description: This species is endemic to the Andaman group of islands of India. It has been recorded from Henry Lawrence Island, South Andaman and Middle Andaman (Agrawal 2000, Musser and Newcomb 1983) (T.P. Bhattacharya pers. comm.). It occurs from sea level to 200 m (Molur et al. 2005).
Countries occurrence:
India (Andaman Is.)
Estimated area of occupancy (AOO) - km2: <5,000
Number of Locations: 4
Upper elevation limit (metres): 200
Range Map: Click here to open the map viewer and explore range.

Population [top]

Population: There is no information available on the population abundance of this species (Molur et al. 2005).
Current Population Trend: Stable
Additional data:
Population severely fragmented: Yes

Habitat and Ecology [top]

Habitat and Ecology: It is a terrestrial and noctural species and occurs in tropical evergreen forests (Molur et al. 2005).
Systems: Terrestrial

Threats [top]

Major Threat(s): While there appear to be no major threats for this species, it is possible that post tsunami (December 2004) relief works, including the creation of new settlements and clearance of forests in the Andaman islands, could be a potential threat to the species (Sanjay Molur pers. comm. 2008).

Conservation Actions [top]

Conservation Actions: It is listed in the Schedule V (considered as vermin) of the Indian Wildlife (Protection) Act, 1972. It has not been recorded from any protected areas. Survey, ecological studies and monitoring are recommended for this species (Molur et al. 2005).

Citation: Molur, S. & Nameer, P.O. 2008. Rattus stoicus. The IUCN Red List of Threatened Species 2008: e.T19365A8870051. . Downloaded on 31 May 2016.
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